Hot-water extraction unit



FIG. 1 is a perspective view of a hot-water extraction unit, showing my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a rear elevational view thereof.

The electrical cord has been shown fragmentarily in FIGS. 2, 3 and 5 for convenience of illustration. 

The ornamental design for a hot-water extraction unit, as shown and described. 